fix: match ghostty pane default colors to host terminal theme

3 files changed, 54 insertions, 6 deletions

diff --git a/src/app/input.rs b/src/app/input.rs
index 688a2a05..baa46e4c 100644
--- a/src/app/input.rs
+++ b/src/app/input.rs
@@ -2080,9 +2080,12 @@ impl AppState {
                 }
             }
 
-            MouseEventKind::Up(MouseButton::Middle) | MouseEventKind::Up(MouseButton::Right)
+            MouseEventKind::Up(MouseButton::Middle)
+            | MouseEventKind::Up(MouseButton::Right)
             | MouseEventKind::Drag(MouseButton::Middle)
-            | MouseEventKind::Drag(MouseButton::Right) if !in_sidebar => {
+            | MouseEventKind::Drag(MouseButton::Right)
+                if !in_sidebar =>
+            {
                 if let Some(info) = self.pane_mouse_target(mouse.column, mouse.row).cloned() {
                     let _ = self.forward_pane_mouse_button(&info, mouse);
                 }
@@ -2390,7 +2393,8 @@ impl AppState {
     }
 
     fn pane_mouse_target(&self, col: u16, row: u16) -> Option<&PaneInfo> {
-        self.pane_at(col, row).or_else(|| self.pane_frame_at(col, row))
+        self.pane_at(col, row)
+            .or_else(|| self.pane_frame_at(col, row))
     }
 
     fn pane_frame_at(&self, col: u16, row: u16) -> Option<&PaneInfo> {
@@ -2613,7 +2617,9 @@ impl AppState {
             .and_then(|rt| rt.cwd());
 
         if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
-            if let Ok(new_id) = ws.split_focused(direction, new_rows, new_cols, cwd) {
+            if let Ok(new_id) =
+                ws.split_focused(direction, new_rows, new_cols, cwd, self.host_terminal_theme)
+            {
                 ws.layout.focus_pane(new_id);
                 self.mode = Mode::Terminal;
             }
diff --git a/src/app/mod.rs b/src/app/mod.rs
index b53024b1..064b153a 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -256,6 +256,7 @@ impl App {
                 original_theme: None,
             },
             global_menu: state::MenuListState::new(0),
+            host_terminal_theme: crate::terminal_theme::TerminalTheme::default(),
         };
 
         for ws in &mut state.workspaces {
@@ -308,6 +309,7 @@ impl App {
         if self.input_rx.is_none() {
             self.input_rx = Some(crate::raw_input::spawn_input_reader());
         }
+        self.query_host_terminal_theme();
 
         let mut needs_render = true;
 
@@ -494,10 +496,44 @@ impl App {
                 self.handle_mouse(mouse);
                 true
             }
+            crate::raw_input::RawInputEvent::HostDefaultColor { kind, color } => {
+                let next_theme = self.state.host_terminal_theme.with_color(kind, color);
+                if next_theme == self.state.host_terminal_theme {
+                    return false;
+                }
+                self.state.host_terminal_theme = next_theme;
+                self.apply_host_terminal_theme_to_panes();
+                true
+            }
             crate::raw_input::RawInputEvent::Unsupported => false,
         }
     }
 
+    fn query_host_terminal_theme(&self) {
+        use std::io::Write;
+
+        let _ = std::io::stdout()
+            .write_all(crate::terminal_theme::HOST_COLOR_QUERY_SEQUENCE.as_bytes());
+        let _ = std::io::stdout().flush();
+    }
+
+    fn apply_host_terminal_theme_to_panes(&self) {
+        if self.state.host_terminal_theme.is_empty() {
+            return;
+        }
+
+        for workspace in &self.state.workspaces {
+            for tab in &workspace.tabs {
+                for runtime in tab.runtimes.values() {
+                    runtime.apply_host_terminal_theme(self.state.host_terminal_theme);
+                }
+            }
+        }
+
+        self.render_dirty.store(true, Ordering::Release);
+        self.render_notify.notify_one();
+    }
+
     fn handle_resize_poll(&mut self) -> bool {
         let Ok(size) = terminal::size() else {
             return false;
@@ -1179,7 +1215,7 @@ impl App {
                     .workspaces
                     .get_mut(ws_idx)
                     .ok_or_else(|| std::io::Error::other("workspace disappeared"))
-                    .and_then(|ws| ws.create_tab(rows, cols, cwd));
+                    .and_then(|ws| ws.create_tab(rows, cols, cwd, self.state.host_terminal_theme));
                 match result {
                     Ok(tab_idx) => {
                         if params.focus {
@@ -1378,6 +1414,7 @@ impl App {
                     rows,
                     cols,
                     params.cwd.map(std::path::PathBuf::from),
+                    self.state.host_terminal_theme,
                 ) {
                     Ok(new_pane_id) => new_pane_id,
                     Err(err) => {
@@ -1907,7 +1944,7 @@ impl App {
         };
         let (rows, cols) = self.state.estimate_pane_size();
         let ws = &mut self.state.workspaces[ws_idx];
-        let idx = ws.create_tab(rows, cols, initial_cwd)?;
+        let idx = ws.create_tab(rows, cols, initial_cwd, self.state.host_terminal_theme)?;
         if focus {
             ws.switch_tab(idx);
             self.state.mode = Mode::Terminal;
@@ -1925,6 +1962,7 @@ impl App {
             initial_cwd,
             rows,
             cols,
+            self.state.host_terminal_theme,
             self.event_tx.clone(),
             self.render_notify.clone(),
             self.render_dirty.clone(),
diff --git a/src/app/state.rs b/src/app/state.rs
index 6708ef65..c55b5cd8 100644
--- a/src/app/state.rs
+++ b/src/app/state.rs
@@ -5,6 +5,7 @@ use ratatui::style::Color;
 
 use crate::layout::{PaneInfo, SplitBorder};
 use crate::selection::Selection;
+use crate::terminal_theme::TerminalTheme;
 use crate::workspace::Workspace;
 
 // ---------------------------------------------------------------------------
@@ -595,6 +596,8 @@ pub struct AppState {
     pub settings: SettingsState,
     /// Highlight state for the bottom-right global launcher menu.
     pub global_menu: MenuListState,
+    /// Resolved host terminal default colors for theming embedded panes.
+    pub host_terminal_theme: TerminalTheme,
 }
 
 impl AppState {
@@ -740,6 +743,7 @@ impl AppState {
                 original_theme: None,
             },
             global_menu: MenuListState::new(0),
+            host_terminal_theme: TerminalTheme::default(),
         }
     }
 }